Manufactured by CHG Bearing, the 87737/87112D is a precision Double Row Tapered Roller Bearings. Key dimensional parameters include a 187.325 mm bore diameter, a 282.575 mm outer diameter, and a 107.95 mm overall width. This component is designed to meet standard load requirements and ensure consistent operational performance. For comprehensive technical evaluation, please explore the detailed specifications, dimensional data, product images, and CAD drawings provided below. A complete PDF data sheet is also readily available for direct download to support your engineering and procurement needs.
87737/87112D - Double Row Tapered Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 87737/87112D |
| Brand | CHG® |
| Bearing | Double Row Tapered Roller Bearing |
| Characteristics | |
| Series | 370000 |
| Number of Rows | Double Row |
| Tolerance Class | Class 4 |
| Dimensions | |
| Bore Diameter (d) | 187.325 mm |
| Width (B) | 107.95 mm |
| Outer Diameter (D) | 282.575 mm |
| Bore Diameter Tolerance | 0 – +0.025 mm |
| Outside Diameter Tolerance | 0 – +0.025 mm |
| Inner Ring Chamfer | 3.2 mm |
| Outer Ring Chamfer | 1.6 mm |
| Inner Ring Assembly Width Tolerance | 0 – +0.406 mm |
| Outer Ring Assembly Width | 101.6 mm |
| Outer Ring Assembly Width Tolerance | 0 – +0.406 mm |
| Shaft Abutment Diameter | 153.1 mm |
| Housing Abutment Diameter | 204.5 mm |
| Lubrication Hole Diameter | 5 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 551 kN |
| Basic Static Load Rating C0 (kN) | 1100 kN |
| Material | |
| Mass (kg) | 14.6 kg |
| Ring Material | Bearing Steel |
| Cage Material | 08Al Steel / Grade 10 Steel |
| Lubrication Groove Width | 10 mm |
| Roller Material | Bearing Steel |
87737/87112D 282.575 mm 187.325 mm 107.95 mm Frequently Asked Questions about 87737/87112D Double Row Tapered Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Model 87737/87112D is manufactured by CHG Bearing in standard Normal clearance (CN) for ambient temperature transmission, and C3 or C4 clearance for heavy duty applications. C3 clearance compensates for radial shrinkage caused by tight shaft press-fits (bore 187.325 mm) and steep thermal gradients between inner and outer rings.
To ensure optimum performance of CHG Bearing 87737/87112D Double Row Tapered Roller Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 187.325 mm bore. For the 282.575 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
Standard batches of CHG Bearing 87737/87112D conform strictly to ISO Class Normal (ABEC-1). For high-precision machine tool spindles, gearboxes, or robotics requiring tighter runouts, CHG Bearing can provide custom batches graded to ISO Class 6 (P6/ABEC-3) or ISO Class 5 (P5/ABEC-5) with 100% micrometer verification.
The CHG Bearing 87737/87112D is rated for limiting speeds up to standard rated RPM under forced oil-mist or circulating oil lubrication regimes. When lubricated with factory-filled synthetic high-speed grease, safe continuous velocity is maintained at approximately 75% to 85% of the maximum nominal limit, preventing thermal runaway.
